Work holding attachment for vises



Oct. 20, 1942 KQCHQRQSKY 2,299,632

WORK HOLDING ATTACHMENT FOR VISES Filed Oct. 28. 1941 Patented Oct. 20,1942 UNITED STATES PATENT OFFICE WORK HOLDING ATTACHMENT FOR VISESEdward Kochorosky, Two Rivers, Wis. Application October 28, 1941, SerialNo. 416,880

3 Claims.

This invention relates to Vises and more particularly to awork-hold-down attachment therefor.

An object of this invention is to provide as a new article ofmanufacture a hold-down attachment for mounting on a movabl jaw of avise for holding the work down on a flat surface, such as the top of abench or the like.

Another object of thi invention is to provide an attachment of this kindwhich is simple in construction and may be applied to a vise withoutchanging any of the present parts of th vise.

A further object of this invention is to provide an attachment of thiskind which is formed with means for holding the device against movementrelative to the vise and also against movement relative to the work.

With the foregoing objects and to others which may hereinafter appear,the invention consists of the novel construction, combination andarrangement of parts as will be more specifically referred to andillustrated in the accompanying drawing, wherein an embodiment of theinvention is shown, but it is to be understood that changes, variationsand modifications may be resorted to which fall within the scope of theinvention as claimed.

In the drawing:

Figure l is a detail front elevation of a work hold-down attachment fora vise constructed according to an embodiment of this invention,

Figur 2 is a detail top plan of the device, and

Figure 3 is a detail end elevation of the device in applied positionwith respect to a vise jaw and an article of work.

Referring to the drawing, the numeral I designates generally a movablejaw of a vise which may be associated with a bench or table I I having afiat upper surface I2. The vise jaw ID as shown in Figure 3 is adaptedto project slightly above the top surface I2 of the bench or table I I,

and the forward face I3 of the jaw I0 is disposed at right angles to theupper or horizontal face I4 thereof.

In order to provide a means whereby an article of work I5 may be helddown fiat on the working surface I2 of the table II, I have provided asa new article of manufacture, a work-hold-down attachment generallydesignated as IS. The attachment I6 comprises an elongated flat body I!which is substantially rectangular in plan and also rectangular in endelevation. The lower face I8 0f the body I! is adapted to engage on theupper surface I4 of the jaw ID. A work holding jaw I9 is formed integralwith the body I! and projects forwardly and downwardly therefrom. Thejaw I9 may be of a width substantially equal to the width of the bodyI1, and in end elevation the jaw I9 is formed with a downwardly inclinedupper fac 29 and a downwardly inclined lower face 2|. The two faces orsurfaces 20 and 2| are disposed in forwardly convergent relation andterminate at their forward ends in a vertically disposed work engagingface 22.

The face 22 is serrated throughout the length and width thereof so thatwhen the surface 22 contacts with the adjacent end of the Work I5, thejaw I9 will not slip relative to the adjacent end of the work. The jawI9 is formed with a downwardly offset portion 23 which extendsdownwardly from the lower surfac I8 of the body I! thereby providing aright angularly disposed shoulder 24 which is adapted to confront andengage the vertical face I3 of the jaw ID. The rear side of the jaw I9along the offset portion 23 thereof is formed with a pair of paralleland vertically spaced apart grooves 25 which extend inwardly from therear vertical face 24 of the offset portion 23, thereby forming aplurality of vertically spaced ribs which are adapted to engage thevertical face I3 of the jaw I0 in order to hold the jaw I9 againstvertical movement relative to the jaw I0. When the attachment I6 is inapplied position, the lower or forward end of the jaw l9 will benormally disposed in upwardly spaced relation to the working surface I2of the table I I, as shown in Figure 3. The attachment hereinbeforedescribed may be removably mounted on the jaw I9, or if desired, may bebolted or otherwise fastened to the upper surface thereof with theoffset portion 23 engaging the working ide of the jaw I0. When the jawI0 is moved inwardly towards the adjacent end of the work I5, the jaw I9will be tightly clamped between the jaw I0 and the adjacent end of thework I5. Since the upper edge of the work engaging face 22 of jaw I9lies in a lower horizontal plane than the lower edge of rear face 24, atight clamping of the jaw I9 between the jaw IO and the work I5 willeffect a downward pressure on the work I5 so as to maintain the lowerside of the work I5 flat upon the working surface I2 of the table orbench II. It will be understood that the other or opposite end of thework I5 may be engaged with a conventional bench stop or other abutmentwhich may be mounted on the bench or table I I and project upwardlytherefrom.

What I claim is:

1. A work hold-down attachment for a vise comprising an elongated bodypositionable over the upper end of a movable vise jaw, a downwardlyinclined work engaging jaw integral with said body terminating in a workengaging face, the rear end of said work engaging jaw extending rightangularly and downwardly from the lower surface of said body forengagement with the forward side of said movable jaw, the extended rearend of said work engaging jaw being formed with a plurality of parallellongitudinal grooves to thereby provide longitudinal ribs between thegrooves for engagement with said movable jaw, said ribs holding saidattachment against upward movement relative to said movable jaw, andserrations oarried by the work engaging face of said work engaging jaw,the upper edge of the work engaging face of the work engaging jaw beingin a plane lower than the lower edge of the rear end of said workengaging jaw.

2. A work hold-down attachment for a vise comprising the elongated bodypositionable over the upper end of a movable vise jaw, a downwardlyinclined work engaging jaw integral with said body terminating in asubstantially vertical work engaging face, the rear end of said workengaging jaw extending right angularly and downwardly from the lowersurface of said body and having a face for engagement with the forwardside of said movable jaw, the extended rear end of said work engagingjaw face being formed with a plurality of parallel longitudinal groovesto thereby provide longitudinal ribs between the grooves for engagementwith said movable jaw, said ribs holding said attachment against upwardmovement relative to said movable jaw, and serrations carried by theforward edge of said work engaging jaw, said work engaging jaw havingforwardly convergent and downwardly inclined upper and lower faces, saidwork engaging face having its upper edge in a plane lower than the loweredge of the jaw engaging face.

3. A work hold-down attachment for a movable vise jaw comprising adownwardly and forwardly extending work engaging jaw, said latter jawbeing of substantially truncated V-shape in transverse section and theforward edge of said latter jaw being substantially vertical, serrationscarried by said forward edge for engagement with the work, the rear edgeof said latter jaw being substantially vertical and formed with aplurality of longitudinal parallel grooves, and a supporting bodyintegral with said latter jaw and disposed at an obtuse angle relativethereto, said body being offset upwardly from the lower side of saidlatter jaw and adapted to engage on the upper side of said movable jaw,said forward edge of said latter jaw having its upper edge in a planelower than the lower edge of said rear edge of said latter jaw.

EDWARD KOCHOROSKY.

